Wide discourager tooth

Abstract

Oil sump seal pressurization apparatus for turbine engines are disclosed. An example oil sump seal pressurization apparatus may include a non-rotating oil sump housing a bearing; an oil seal isolating an interior of the oil sump; a passage arranged to supply pressurization air to an outward side of the oil seal; a drain arranged to allow draining of oil and venting of at least some of the pressurization air, the drain being positioned axially between the passage and the oil seal; a wide discourager tooth disposed on the shaft and extending radially outward towards a non-rotating land, which may be disposed axially between the passage and the drain, the wide discourager tooth being spaced apart from the land in a radial direction by a gap, the wide discourager tooth including an upper surface; and / or an adjacent tooth disposed on the shaft and extending radially outward from the shaft.

Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of U.S. Provisional Application No. 61 / 639,560, filed Apr. 27, 2012, which is incorporated by reference herein in its entirety.

[0002] The subject matter of this application may be related to the subject matter of U.S. Patent Application No. 61 / 639,315, titled “APPARATUS AND METHOD FOR MITIGATING VORTEX PUMPING EFFECT UPSTREAM OF OIL SEAL,” filed on even date herewith, which is incorporated by reference herein its entirety.BACKGROUND

[0003] The subject matter disclosed herein relates generally to apparatuses and methods for retaining fluid lubricant, such as oil, in an oil sump and / or its drain path. More specifically, but not by way of limitation, some example embodiments relate to apparatuses and methods for maintaining design gaps during axial excursions of a shaft while also improving the limitation of oil leakage, for example from in a sump of a turbine engine.

[0004] In a turbine engine, air is pressuriz...

Examples

Embodiment Construction

[0021]In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this disclosure.

[0022]Reference now will be made in detail to embodiments provided, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation, not limitation ...

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of U.S. Provisional Application No. 61 / 639,560, filed Apr. 27, 2012, which is incorporated by reference herein in its entirety.

[0002] The subject matter of this application may be related to the subject matter of U.S. Patent Application No. 61 / 639,315, titled “APPARATUS AND METHOD FOR MITIGATING VORTEX PUMPING EFFECT UPSTREAM OF OIL SEAL,” filed on even date herewith, which is incorporated by reference herein its entirety.BACKGROUND

[0003] The subject matter disclosed herein relates generally to apparatuses and methods for retaining fluid lubricant, such as oil, in an oil sump and / or its drain path. More specifically, but not by way of limitation, some example embodiments relate to apparatuses and methods for maintaining design gaps during axial excursions of a shaft while also improving the limitation of oil leakage, for example from in a sump of a turbine engine.

[0004] In a turbine engine, air is pressuriz...

Examples

Embodiment Construction

[0021]In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this disclosure.

[0022]Reference now will be made in detail to embodiments provided, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation, not limitation ...

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